When I was a child I had a fishless aquarium. My father set it up for me with gravel and plants and pebbles before he'd got the fish and I asked him to leave it as it was for a while. The pump kept up a charming burble, the green-gold light was wondrous when the room was dark. I put in a china mermaid and a tin horseman who maintained a relationship like that of the figures on Keat's Grecian urn except that the horseman grew rusty. Eventually fish were pressed upon me and they seemed an intrusion, I gave them to a friend. All that aquarium wanted was the sound of the pump, the gently waving plants, the mysterious pebbles and the silent horseman forever galloping to the mermaid smiling in the green-gold light. I used to sit and look at them for hours. The mermaid and the horseman were from my father. I have them in a box somewhere here, I'm not yet ready to take them out and look at them again.